Just so he doesn't take too long about it

I've seen folks commenting on the way BuckyCap seems to lose some of his confidence/competence when he teams up with the Falcon (actually, to some extent even earlier, when he was working with Natasha). That he'd been the Winter Soldier, super-assassin, and now he's uncertain and messes up sometimes and what's up with this?

But I can think of a couple of different reasons for it, just off the top of my head.

First is that, really, it's not the same job. There is undoubtedly a different skill set involved in superheroing than there is in covert assassination missions. Obviously there's a lot of common ground and some overlap, but not enough to make someone who's skilled in one area automatically an expert in the other.

And the second is that, the last time BuckyCap did anything remotely close to superheroing--when he was teamed with OriginalCap and working with the Invaders--he was in a secondary position. He wasn't the decision-maker, he wasn't the guy in charge. He wasn't working alone. So it makes some sense, to me, that if he's doing that sort of work again, he's going to sort of shift into that sidekick mode again. He'll probably get over it soon enough--but as an initial reaction, it's not illogical.